In the first courtroom scene, the attorney general (Morgan White) mistakenly refers to Tokura as Tokuru.
The license plate number on McGarrett's car is F6-3958.
McGarrett and Chin Ho use the word "bushido" incorrectly in this episode. According to the American Heritage Dictionary, the word is a noun meaning "The traditional code of the Japanese samurai, stressing honor, self-discipline, bravery, and simple living." McGarrett refers to individual modern-day samurai as bushido, when the word should only be used to refer to the code that the samurai follow.
Tokura: If you have pressing affairs elsewhere, Mr. McGarrett, we will quite understand.
McGarrett: As a matter of fact, I have. I'm about to order a medal -- for the next bushido who comes to chop you down.
Automobiles furnished by Ford Motor Company
Travel assistance and consideration provided by United Airlines
Filmed entirely on location in Hawaii
Portions filmed on The Kaiser Estate courtesy of Henry J. Kaiser
A Leonard Freeman Production
In Association With The CBS Television Network
This was the first episode of the regular series to be produced, although it was not the first episode broadcast.
The official syndication number for this episode is 6804.
Ricardo Montalban plays a Japanese gangster in this episode, even though he is of Mexican heritage.